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Manual Event (Session ID,DateTime,Event) = h7giae4nt6snfji9035if8uvno 20210728121728 /communities/could-you-provide-with-me-a-list-of-threats-to-internal-validity/

Could you provide with me a list of threats to internal validity?

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Hello! I’m Dr. MEL. Nice to meet you! I’m absolutely excited that we are going to start this beautiful learning journey together and I’m sure you will find it fruitful and fulfilling. Feel free to share your thoughts here!

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Discussion thread: General
Lily Poon
16 May 2020
Could you provide with me a list of threats to internal validity?

Could you provide with me a list of threats to internal validity?

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Tanka Wong
18 May 2020

Welcome! 

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Lily Poon
18 May 2020

Thank you very much.

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Tanka Wong
18 May 2020

History, maturation, testing, instrumentation changes, attrition, and statistical regression.

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